Freedom to Operate vs. Patentability Search: Two Questions, Two Different Answers

The Mistake That Costs the Most

"We searched and our idea is new, so we are clear to launch." That sentence confuses two separate questions.

A patentability search asks whether you can get a patent. A freedom-to-operate (FTO) search asks whether you can sell your product without infringing someone else's. You can succeed at the first and fail at the second, because a patent is a right to exclude others, not a right to practice your own invention (35 USC 154). An improvement can be patentable and still infringe an earlier, broader patent.

How the Two Searches Differ

	Patentability search	FTO search
Question	Can I get a claim?	Can I launch this product?
Compared against	My proposed claims	Other people's issued and pending claims
What matters in a reference	Everything it discloses	What it claims
Timing	Before my effective filing date	Now and through my market period
Geography	Worldwide	Each country where I make, use, sell or import
Legal status	Irrelevant: expired art still counts	Decisive
Non-patent literature	Yes	Generally no

This comparison is our synthesis. No US statute or USPTO rule defines either search; both are terms of practice. WIPO describes FTO as investigating whether a specific action can be performed without appearing to infringe enforceable patents owned by others, based on claims, geography and time (WIPO Pub. 1062).

So a patent that expired in 2015 can still block your own application as prior art, yet it is irrelevant to launching your product going forward.

The Patentability Side

Prior art covers what was patented, described in a printed publication, in public use, on sale, or otherwise available to the public before your effective filing date (35 USC 102). It is global, and it reaches theses, posters and internet postings (MPEP 2152).

The US grace period is narrower than many inventors assume. It excepts your own disclosures made a year or less before filing (35 USC 102), but if a third party then publishes something you did not disclose, that addition can still count against you (MPEP 2153).

The 18-Month Blind Spot

Applications generally stay secret until 18 months after filing (35 USC 122). As a result, no search can see what was filed recently. An application filed yesterday cannot be found today, yet it can later become prior art dated to yesterday (35 USC 102). Every search report is a snapshot with a gap in it, and FTO work needs periodic updates for that reason.

The FTO Side: Is the Claim Live?

Infringement covers making, using, offering to sell, selling or importing a patented invention in the United States during the patent's term (35 USC 271). The analysis turns on the claims, element by element (Warner-Jenkinson v. Hilton Davis).

Whether a patent is still alive takes real work:

Term: generally 20 years from the earliest non-provisional filing date, with possible adjustments, disclaimers and extensions (35 USC 154; 35 USC 156).
Maintenance fees: due at 3.5, 7.5 and 11.5 years after grant, with a six-month surcharge window after each (MPEP 2506). A patent expires if they go unpaid (35 USC 41).
Revival: the USPTO can accept a late payment for unintentional delay, with intervening rights protecting those who acted in the meantime (35 USC 41). A lapsed patent is not automatically safe.
Pending applications: only granted patents can be enforced, but provisional rights can allow a royalty from a publication date if you had actual notice and the issued claims are substantially identical (35 USC 154).
Past acts: expired patents can still reach infringement from the previous six years (35 USC 286).

Do not rely on a free database's status field. Google notes that its legal status is an assumption, not a legal conclusion (Google Patents Record). Confirm against USPTO records.

Should You Avoid Looking?

Some founders worry that searching creates knowledge, and knowledge creates liability. It is a fair concern, but avoiding the search is no answer.

Damages can be increased up to three times (35 USC 284), and courts reserve enhancement for egregious conduct, measured by what the infringer knew at the time (Halo v. Pulse). Not obtaining advice of counsel cannot be used to prove willfulness (35 USC 298). But deliberately avoiding the truth does not protect you either: willful blindness can satisfy the knowledge needed for induced infringement (Global-Tech v. SEB).

In our view, a careful, documented analysis done before launch is worth far more than an argument built after a lawsuit. Note too that a good-faith belief that a patent is invalid is no defense to inducement (Commil v. Cisco), so a non-infringement position matters.

Patent applicants have no duty to search before filing (MPEP 410). However, people substantively involved in an application must disclose known material information (37 CFR 1.56), so anything an FTO search finds should go to your patent counsel.

Tools for a First Look

Free databases include USPTO Patent Public Search, Espacenet, WIPO PATENTSCOPE and Google Patents. As of November 6, 2026, the USPTO says Patent Public Search will soon require sign-in.

The USPTO's AI search pilot, ASAP!, has closed to new petitions (USPTO ASAP! Page), although examiners must now use the office's AI similarity search on plant and utility applications (USPTO Memo, October 24, 2025). Expect examiners to find semantically similar references, not only keyword matches.

These tools find documents. They do not produce conclusions. A real FTO opinion compares specific claims to a specific product, and WIPO itself cautions that its FTO tool is not meant to assert you have complete FTO (WIPO Toolkit, Tool 5).

If You Find a Blocking Patent

You can design around it, license it, or challenge it. Challenges have become harder to start, and this area is changing quickly, so treat these as a snapshot from November 6, 2026.

Inter partes review (IPR) challenges a patent on patents and printed publications (35 USC 311). Government fees start at $23,750 for the request plus $28,125 after institution (USPTO Fee Schedule).
Post-grant review allows broader grounds, but only within nine months of grant (35 USC 321).
Ex parte reexamination can be requested by anyone at any time (35 USC 302), though the USPTO proposed in July 2026 to require naming real parties in interest (91 FR 46038).

IPR is less reliable than it was. The Director took over institution decisions in October 2025 (USPTO Memo, October 17, 2025), and the USPTO's figures for FY2026 through June show 38% of petitions instituted (PTAB Trial Statistics, June 2026). A final rule on institution has been under White House review since July 22, 2026 and is not yet public (reginfo.gov).

Our takeaway: find problem patents early. Under the "settled expectations" approach, the age of a patent can count against an IPR petition (Crowell & Moring), so a late discovery leaves you with fewer options.

The Bottom Line

Run both searches, at different times, for different reasons. Search for patentability before you invest in filing, and clear FTO before you commit to launch. Our guide to prior art search covers the first in more depth.

Obsidyan's AI prior art tools can give you a starting point for what to check. They are not a patent search and not an FTO opinion, so confirm anything they surface in official databases. For a launch decision, work with a patent attorney.

Sources

Sources checked November 6, 2026. Fees, pilot programs and pending rules change, so confirm current figures with the USPTO. This article is general information, not legal advice, and Obsidyan is not a law firm. Talk to a registered patent attorney or agent about your situation.